Modeling of Basic DC-DC Converters

被引：0
|
作者：
Li, Zilin [1 ]
Cheng, K. W. E. [1 ]
Hu, Jiefeng [1 ]
机构：
[1] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China
来源：
2017 7TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS SYSTEMS AND APPLICATIONS - SMART MOBILITY, POWER TRANSFER & SECURITY (PESA) | 2017年
关键词：
dc converters; PWM switch model; small-signal model; PSIM AC Sweep; frequency response; DISCONTINUOUS CONDUCTION MODE; PWM CONVERTERS; SWITCH;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Three basic dc converters-buck, boost, and buck-boost converter are analyzed in this article. Instead of deriving state-space equations of converters, the averaged models of PWM switch both in CCM and DCM are developed first. The models enable to simplify analysis of dc converters without considering nonlinear PWM switch action. Incorporate PWM switch models into power stage circuits, steady-state and small-signal models of the converters can be obtained both in CCM and DCM. The criteria of judging DCM of dc converters are also developed. Finally. small-signal models are verified by comparing frequency response from small-signal model and that from PSIM AC Sweep simulation.
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页数：8
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